Lay-motion for looms.



No. 811,408. PATENTED JAN. so, 1906. s. D. KELLEY.

LAY MOTION FOR LOOMS.

APPLICATION FILED OOT.16, 1902,

2 SHEETS SHEET 1,

No. 811,408. PATENTED JAN. 30, 1.906. S. D. KELLEY.

LAY MOTION FOR LOOMS.

APPLICATION FILED OGT.16. 1902.

2 SHEETS -SHEET 2.

citizen of the United If TE STATES PATENT OFFICE,

SAMUEL D. KELLEY, OF BOSTON, MASSACHUSETTS.

' LAY-MOTION FOR LOOIVIS.

No. a 1 1 ,408.

Patented Jan. 30, 1906.

Application filed October 16, 1902. Serial No. 127,458.

To alt whom it may concern.-

Be it known that I, SAMUEL D. KELLEY, a States, residing at Boston, in the county of Suffolk and State of Massachusetts, have invented a new and useful Improvement in Lay-Motions for Looms, of which the following is a specification.

My invention relates to upon a loom adapted particularly to weaving metallic fabrics, and especially upon the loom described in Letters Patent of the United. States No. 386,506, dated July 24, 1888; and the object of my invention is to vary the action of the lay in beating the me.- talhc filling into the warp, each pick two blows of unequal force, for a purpose which will be hereinafter explained. I attain this object by the'mechanism and means illustrated in the accompanying drawings, in which Figure 1 is a central sectional elevation of the loom described in the patent above referred to, showing in addition my improvements as embodied therein; and Fig. 2 is a like drawing with the parts in a changed position, as when the movement of the lay has taken place from its most backward position to its most forward.

The drawings illustrate features of novelty in the loom not herein described and claimed, but which will be illustrated, described, and claimed in a separate application.

Referring to the principal parts of the loom so far as deemed necessary to illustrate it in the drawings, A represents the frame of the loom; B, the warp-beam; C, part of the harness mechanism; D, the lay; E, the adjustable web-support F, the edge of the web G, the take-up roll; H, the iron breast beam.

J is a cam for actuating the lay through lever K,which carries a roll K and is connected with the adjustable arm L, attached at its upper end to a toggle-joint L, one arm of which is pivoted at L to the lay, while the other arm is pivoted at L to the frame. It will be observed that the latter arm is slotted to give it an endwise play on its pivot L in the frame for a purpose which will be explained. In the loom described in the patent referred to the mechanism for moving the lay D back and forth on its shaft D and causing it to give two blows to the filling of e ual force employs a toggle-joint substantia ly as in this case, except that the arm thereof which is pivoted to the frame is not slotted. By

improvements so as to give to l this-slotting of said arm and employing additional devices therewith I am enabled to accomplish one of the important purposes of my present invention-namcly, to give two lows of unequal force to the filling in beating each pick into place. In all other respects the action of the lay is the same as in said former patent. To accomplish and regulate such variation in the force of the blows of the lay against the weft-threads, I employ in a groove M in the frame or to work in other suitable fixed ways arranged in close proximity to the slotted end of the toggle-joint pivoted to the frame a vertical sliding block N, having an inclined side which serves as a bearing for the adjacent rounded end of the toggle-arm. This wedge-like sliding block is connected by a link N to an adjustable rocking bar N pivoted to the frame at hi and connected by a link N with a cam P, the link N carrying a trundle which enters the groove P in the face of the cam P. The shafts upon which camsJ and P are fastened are geared together, so as to make an equal number of revolutions by usual gearing. (Not shown in the drawings except in dotted circles R and R.) The operation of this automatic sliding block upon the action of the lay is as follows: WVhen the lay is in its extreme backward position, as shown in Fig. 1, the sliding block N rests in its highest position in its groove with its full width interposed and servmg as a bearing for the rounded end of the slotted arm of the toggle-j oint, keeping the outer end of the slot firmly against its pivot L The timely action of other parts of the loom having now made ready for the beating of the lay against the filling, a halfrevolution of cam J carries the toggle to and past a straight line through its longitudinal center and into the position shown in Fig. 2- and causes the lay to make its extreme movement and one fullforce heat while cam P makes a half-revolution, carrying block N down to the position shown in Fig. 2. Another half-revolution of the cams returns the parts to the positions shown in Fig. 1 but in so doing the lay does not give a full-force blow to the filling, owing to the dropping of block N, so as to bring its narrower part opposite arm L of the toggle, allowing the latter to slide by reason of its slot on its pivot and into contact with the inclined side of the block, thus reducing the reach of the lay in its forward movement and the force of its blow on the filling. The vertical movement of the block in its groove IIO may be regulated and its position varied by changing the fulcrum N of the rocking bar W from one of the holes shown therein to another, thus effecting a change in the leverage of the bar and a consequent change in the position of the incline relatively to the end of the slotted arm L and thereby varying the movement and force of the blow of the lay in its second beat, as desired. By causing the lay to thus impart two unequal blows to the filling, (it being understood that the warp is crossed over the filling between the blows,) the force of the second blow being capable of regulation, the weaving may be much improved for certain purposes, the web while being woven with the proper number of picks to the inch is more flexible and ductile, and its durability increased, a result not attainable by the old method, though much desired.

I am aware of Letters Patent of the United States No. 321,631, dated July 7, 1885, for Looms for weaving looped or terry fabrics, in which the lathe beats three picks at once, striking with uniform force, and makes only a partial movement twice out of the three times, so as to allow the filling to accumulate three picks in the warp before the third beat of the lathe, which is a full beat, not only carries forward the third weft, but moves the two partially-beaten-up wefts fullyforward, as therein described, while my loom gives two full blows upon each pick, but with unequal force and with an entirely different effect and purpose. The two devices being thus unsuited for and incapable of accomplishing each others purpose, I make no claim to anything shown or described in said patent.

I claim- In combination, lay D, the actuating-tog gle joint mechanism connected therewith and comprising a slotted arm attached to the frame of the loom by a pin L mechanism cooperating therewith for varying the movement of the lay, and comprising block N there being a groove M, in the loom-frame in which said block slides; link N rocking bar bl pivoted to frame link N, connecting the bar with the actuating-cam; and cam P, by which said parts are actuated to regulate the lay motion and to thereby automatically vary the force of its blows upon the filling as and for the purposes specified.

SAhlUEL D. KELLEY.

Witnesses:

JAMES F. GARVIN, 2d, EUGENE HUMPHREY. 

